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Bulletin of Animal Health and Production in Africa

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Twenty Six Years Retrospective Studies Of The Prevalence Of Gastrointestinal Helminths Isolated From Necropsied Animals In Zaria, Nigeria

SB Oladele, ND Ibrahim, MY Fatihu, B Mohammed, SD Sambo, RK Aluko

Abstract




Prevalences of gastrointestinal helminths in different domestic animals were determined for
a period of twenty six years, in order to increase the awareness of the potential serious
problems caused by helminths on livestock. A total of five hundred and thirty nine different
species of domestic animals were necropsied from 1976 to 2001, at the Necropsy Unit of
the Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Ahmadu Bello
University, Zaria, Nigeria. Worms or eggs recovered from these necropsied animals were
used to determine the prevalence of gastrointestinal helminths. The prevalences of different
helminths identified are as follows: Spirocerca lupi, 25 (4.64%), Haemonchus contortus,
223 (41.37%), Toxocara canis, 17 (3.13%), Ancylostoma caninum, 24 (4.45%), Ascaris
suum, 39 (7.24%), Taenia solium, 55 (10.20%), Fasciola gigantica, 44 (8.16%), Hebronema
microstoma, 4(0.74%), Oesophagostoma columbianum, 35 (6.49%), Trichostrongylus
colubriformis, 1 (0.19%), Trichuris vulpis, 2 (0.37%), Strogylus equinus, 4 (0.74%),
Parascaris equi, 2 (0.37%), Moniezia expansa, 4 (0.74%), Toxocara cati, 4 (0.74%) and
Paraphistoma cervi, 56 (10.39%). The sheep had the highest prevalence of gastrointestinal
helminths (51.02%). This was followed by the goat with the prevalence of 18.92%, while
the lowest prevalence of 0.56% was obtained from the cat. It was concluded that majority
of animals reared in Zaria were infected by various types of helminths. These data could
serve as basis for comparism with established prevalences of gastrointestinal helminths in
developed countries of the world.
Les prévalences des helminthes gastro-intestinaux chez différents animaux domestiques
étaient déterminées pendant vingt-six ans, afin d'intensifier la sensibilisation sur les graves
problèmes éventuels causés par les helminthes chez le bétail. Au total, 539 animaux
domestiques de diverses espèces étaient nécropsiés de 1976 à 2001 au Service de
Nécropsie, Département de Pathologie et de Microbiologie, Faculté de Médecine vétérinaire,
Université Ahmadu Bello, Zaria, Nigeria. Des vers ou des oeufs recueillis de ces animaux
nécropsiés étaient utilisés pour déterminer la prévalence des helminthes gastro-intestinaux.
Les prévalences des helminthes identifiés étaient comme suit : Spirocerca lupi, 25 (4,64%);
Haemonchus contortus, 223 (41,37%) ; Toxocara canis, 17 (3,13%) ; Ancylostoma caninum,
24 (4, 45%) ; Ascaris suum, 39 (7,24%) ; Taenia solium, 55 (10,20%) ; Fasciola gigantica,
44 (8,16%) ; Hebronema microstoma, 4 (0,74%) ; Oesophagostoma columbianum, 35
(6,49%); Trichostrongylus colubriformis, 1 (0,19%) ; Trichuris vulpis, 2 (0,37%) ; Strongylus
equinus, 4 (0,74%) ; Parascaris equi, 2 (0,37%) ; Moniezia expansa, 4 (0,74%) ;
Toxocara cati, 4 (0,74%) et Paraphistoma cervi, 56 (10,39%). Le mouton avait la plus forte
prévalence d'helminthes gastro-intestinaux (51,02%), suivi par la chèvre (18,92%). La plus
faible prévalence était obtenue chez le chat (0,56%). Il a été conclu que la majorité des
animaux élevés à Zaria étaient infectés par divers types d'helminthes et que ces données
pourraient servir de base de comparaison avec les prévalences avérées d'helminthes
gastro-intestinaux dans les pays développés.
Bulletin of Animal Health and Production in Africa Vol. 54 (4) 2006: pp. 234-240



http://dx.doi.org/10.4314/bahpa.v54i4.32774
AJOL African Journals Online